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HTC TMO1-I-MDA-COMPIV
Where can I get a SIM card that will work internationally?

The easiest way to get a SIM that works in a foreign country is in the foreign country
itself. But often this is actually not the easiest way to get a foreign SIM.
When you're traveling, you don't to have time to find a cell phone store,
and sort out what you need, perhaps in a different language, and potentially
have things go wrong.

For this reason, many people choose to buy a pre-paid SIM for the country or
countries they'll be traveling to before they leave home.

There are several types of
cards that are offered by companies worldwide. Some SIM cards come allready prefilled with
airtime and cost slightly higher than the ones with zero balance.
Mobal
is one of the most popular prepaid SIM cards because of the number of countries it can
operate in, low airtime rates. When you get a Mobal SIM you automatically receive your
own UK based phone number that doesn't expire for as long as you keep using the card.

If you buy the SIM before you leave, you have a chance to make sure you understand how it
works, and will also know its phone number, which you can then conveniently give to
people so they know how to contact you.

What are the advantages of buying international pre-paid SIM cards?

If you travel internationally, the Mobal GSM sim card is a cheaper alternative to roaming service.
Mobal international SIM card can be used in over 160 countries around the
world including USA, United Kingdom, Mexica, Italy, Israel, Australia, Brazil,
Canada, China.
When buying international cards there is no contract that has to be signed with a
service provider, you don't have to commit to a one or two year term like with local
providers. You just buy the SIM, use it as much or as little as you like, and stop
using it whenever you choose.

As there are no monthly fees, international prepaid SIM can often be used in place of
your regular card, however you will still be able to use your existing service and
switch the SIMs whenever you want.

You pay only for shipping initially, call charges are debited from
your credit card when call data is received from the networks

No monthly fees, and there never will be

No minimum usage requirements

Absolutely no additional roaming charges or hidden extras

Keep the same phone number every time you travel

Will this method work on my phone locked to Orange (T-mobile/ATT/etc) ?

Unlocking works on HTC cell phones bought from any GSM provider. It will also work on
Below you can find a list of some popular ones.
Unlocked phone can work with any Service Provider on any GSM network.

All GSM phones are used with SIM card, Subscriber Identity Module, a smart card that securely stores the key identifying a mobile phone service subscriber, as well as subscription information, preferences and text messages.
If you can't find such card in your phone it doesn't belong to GSM standart and might be using AMPS, D-AMPS (TDMA), CDMA, iDEN or other. For example Verizon, Nextel and Sprint are non-GSM carriers and can not be unlocked.

Where can I find instructions how to enter the unlock code into my phone

When I turn on my cellphone the message on the screen reads "Insert correct SIM card". What does it mean?

This or similar messages that appear on your handset means that your mobile phone is locked. In order for this phone to be used with a service provider other than the one it was originally associated with it has to be Unlocked. Some other messages that you can get when your cell phone is locked:

Phones are generally sold by a wireless carrier for much less than their actual retail value. The wireless carrier often subsidizes the cost of the phone with the expectation that they can recover more than this amount throughout the subscriber's contract. They will try to make sure that the phone can only be used on their particular network, and thus, locks the phone's software to their wireless network.
Unlocking means clearing the phone's software setting so that the phone can be used on any network.

Why do I have to unlock the phone and what are the advantages?

Unlocking increases the resale value of your phone as it's not bound
to a particular carrier any more.

Unlocked phone is convenient to travel with, it can work with almost
any provider in the world - just swap the SIM cards. Subscriber can benefit from
purchasing a dual SIM card or
international prepaid SIM card in the visiting country/region as it might be less expensive than international roaming.

Wireless providers charge from 40 to 150 Dollars for an unlocking code.

Run two sim cards in one phone using a dual sim adapter.

Supported Phones

Tmobile MDA Compact 4 locked to T-mobile USA

Description

Remote unlocking by IMEI is performed by generating a phone specific sim unlock code for your Tmobile MDA Compact 4 cellphone. No phone disassembling or technical knowledge is required. All you have to do is to enter the unlock code into your smartphone.

Service Details and Requirements

Type of Unlock:Tmobile MDA Compact 4 Remote Unlock by Code via IMEI. Your mobile phone does not have to be shipped to us.

Turnaround: 24 - 48 hours

Ease of Use: Very easy

Cable Required: No.

Internet Required: No

Guarantee: Yes, or your money back. Please allow 24 - 48 hours.

How Unlock by Code Works

To generate the unlock code we need your phone's 15-digit IMEI number. You can get it by entering *#06# into your handset using phone's keypad.

Benefits of Remote Unlock

Use phones from TIM, Cingular (AT&T), Orange, Rogers, O2, Tmobile, Suncom, etc on other networks and with other service providers

Remote unlocking by code is safe and does not void mobile phone's warranty

Fast. You receive the instructions within the allotted period, unlocking itself takes 1-2 minutes. You never send your phone to anybody

Unlocked Tmobile MDA Compact 4 mobile phone can be used with another SIM card (including international prepaid card) or dual SIM card on any network worldwide saving you money on roaming charges. When traveling you don't have to keep your existing service provider, you can simply use networks available in your travel area

As wireless carriers usually subsidize the cost of the phone, by unlocking it you are increasing the resale value of your handset by up to 300%